Windshield wiper



Feb.'16, 1932. A. WICKSTROM WINDSHIELD WIPER Filed Sept. 17, 1927 dun MyPatented Feb. 16, 1932 UNITED STATES PATENT OFFICE ABVID WICKSTROM, OIDULUTH, umimsora This invention relates to window cleaners and hasspecial reference to one particularly adapted for use on the windshieldof an automobile.

Among various advantages of the novel construction which willappear inthe further descri tion is that of a form of heating element w ich willafford rapid and most efficient heating.

Referring now to the accompanying drawings, forming part of thisapplication, and wherein like reference characters indicate like parts:A

Figure l is a mental portion squeegee;

Figure 2 is a side elevation of the heating element-showing the form ofattachment of perspective view of a fragof the Windshield wiper, or

, wire thereto;

Figure 3 is an enlarged transverse sectional view of a modified form ofsqueegee; and

Figure 4 is a fragmental portion of the body of the modified formshowing how the rubber holder is formed.

1 represents the body portion of the squeegee which is preferablysubstantially cylindrical in form but open at one edge, the sides of thebody portion adjacent the edge bein extended and space from each other.Within this metal body ortion is a similarly shaped lining 2 of suita leinsulating material, and these are formed in such a manner that alongitudinal slot is rovided intermediate of the extended spacedterminals of the combined body and lining. Into this slot is placed theheating element 3 which forms the scraper and the glass engaging edgemay be sharpened or beveled in any desired manner for removingobstructions upon the glass; this device being particularl adapted forthe removal of ice, frost or t e like.

The novel feature of the heating element 3 which is also the cleaningmember is that it comprises a thin flat piece of readily heated metal,that portion thereof extending be end the impinging edges of the holderor ody portion being continuous, while that portion engaged by the edgesof the body is partially cut away, forming toothlike projectionsindicated at 4 which extend within the slot and insulatin lining 9 isfor same.

preferably the spaces intermediate of the teeth are substantially equalin size to same, this being to provide ample strength for the support ofthe blade and also to lessen its conductivity so that the ortionadjacent the glass will heat more readily than ifthe blade were entire;the wires 5 and 6 being attached atthe opposite extreme ends of theblade.

In Figure 3 I have shown the modified form of body portion supporting apair of blades, the latter being indicated at 7, which blades aresimilarin construction to the blades 3 heretofore described, and the body at 8.An provided similar to the lining 2 1n the device previously described.Intermediate of the blades 7 is the arcuately shaped portion 10 of thebody, the edges of which not only cooperate in the holding of the bladesbut act as positive spacing means As is obvious the blades in thismodified form, or that shown in the other views of the drawings, may besecured within the clamping edges of the body portion by suitablethrough rivets within the spaces ingirlledlltte of the teeth 4 on theback of the The portion 10 is provided with arcuate,

g staggered cut-out strips 11 which are bent downwardly for holding asheet rubber wiper 12, which is preferably wrapped about a solid ortubular metal core 13 for holding same firmly in position, theprotruding edges lying flatly against each other and forming a wiperwhich engages the surface of the glass rearwardly of each member 7 asthe squeegee is operated from side to side. This rubber wiper isparticularly for the purpose of removing only moisture from the glass asthe scraper is supposed to be sufficiently adequate to remove all theharder material therefrom.

It will be noted that the wiping surface of the wiper 12 extends belowthe plane in which the edges of the scrapers 7 lie. As the squeegeemoves back and forth'over the pane of glassthe friction between theglass and wiper 12 will rock that scraper moving in front of the wiperinto engagement with the glass. Therefore, if there is ice or snow onthe glass one or the other of the scrapers ii-will he in contact withthe ice or snow melt ing it and scraping it from the Windshieil andimmediately thereafter the Wiper 12 will wipe the moisture from theglass. As soon as the squeegee reachesthe end of its travel in onedirection and commences to travel in the opposite direction the squee eswill he rocked axially so as to brin the 0 er scraper which will now hethe orwardly moving scraper into scraping contact with the glass and itwill be followed by the wimr 12.

Having thus described my invention, what I claim and desire to secure byLetters Petent is l. A squeegee comprising a tubular body portion havingdiverging marginal extremities, an arcuately shaped cooperative portionspaced from said! marginal edges forming slots between the edges of thecooperative portion and saioi margins, a heating blade Within each slotthus tormeol engaged by both marginal edges of the body an& Sakicooperative portion, and an electric connection for sai blades.

2. A. squeegee comprising a body portion adapted to rock havingdliverging marginal cleanin extremities, heating means associateoi withsaid extremities, a resilient cleaning member intermedia% of thecleaning extremities and in constant enga ment with the surface tobe'eleaned Where y when the squeegee is operated in either direction oneor the other of the cleaning extremities will he caused to engawe seiolsurface.

in testimony whereof ii afiin my signature ARVED WICKSTBGM.

tee-ease

